CN203284512U - Tip type needle-free electrostatic spinning device - Google Patents
Tip type needle-free electrostatic spinning device Download PDFInfo
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- CN203284512U CN203284512U CN2013202738779U CN201320273877U CN203284512U CN 203284512 U CN203284512 U CN 203284512U CN 2013202738779 U CN2013202738779 U CN 2013202738779U CN 201320273877 U CN201320273877 U CN 201320273877U CN 203284512 U CN203284512 U CN 203284512U
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Abstract
The utility model discloses a tip type needle-free electrostatic spinning device which comprises a spinning liquid storage box, basic cloth, a spinning device body and a negative-high-voltage direct current power source. The spinning device body comprises a spinning box body, a needle board, a chain, a negative electrode and a connecting device. The spinning box body is fixedly connected with the top end of the spinning liquid storage box. The chain is connected with the inner wall of the spinning box body. The connecting device is connected with a transmission device so that the rotation of the chain can be achieved. The lowest chain section of the chain is immersed in spinning liquid of the spinning liquid storage box. The needle board is fixedly connected with the chain. The top end of the spinning box body is covered by the basic cloth. A sealed spinning space is formed by the spinning liquid storage box, the spinning box body and the basic cloth. The negative electrode is attached to the top face of the basic cloth. The spinning device is grounded. The negative electrode is connected with the negative-high-voltage direct current power source. A high-voltage electrostatic field is formed between the negative electrode and metal needle cloth. The tip type needle-free electrostatic spinning device can improve the yield and the product uniformity of nanofiber products, the fineness of the manufactured nanofiber is high, and fineness variation degree is low.
Description
Technical field
The utility model relates to electrostatic spinning technique, specifically, relates to a kind of most advanced and sophisticated formula needle-less electrospinning device.
Background technology
Electrostatic spinning technique is a kind of technology of utilizing electrostatic field force to prepare nano-fiber material, become in recent years study hotspot both domestic and external, its technological principle is: under high voltage electrostatic field, fine jet is sent on the droplet top under electrostatic force of dangling that is in capillary exit, jet is in the receiving system motion process, solvent evaporates, be solidified into fiber.Electrostatic spinning technique is divided into needle-based and the large class of needleless hair style two.Multi needle or multiinjector Static Spinning technology are considered to the effective ways of realizing that the scale nano-fiber material is produced, and a representative of this technology is the described electrospinning process of WO2007035011, and the method is provided with 38880, nozzle altogether.Needle-based Static Spinning gained fiber has that fineness is thin, the uniform advantage of product, but there will be serious " edge effect (End effect) " phenomenon in Multi needle or multiinjector Static Spinning process, exactly owing to causing the syringe needle of both sides or the nozzle jet out can be to the both sides knockdown with the mutual superposition of electrostatic field of row between Multi needle, make receiving system can only receive middle part fiber, cause electrostatic spinning efficiency and output to be had a greatly reduced quality, result is that Multi needle or many shower nozzles Static Spinning can not be willing to reach as people the productive rate of expection.In addition, the needle-based Static Spinning also exists syringe needle easily to stop up, difficulty is cleared up, easily cause the problems such as product structure is irregular, deterioration.
Compare the needle-based Static Spinning, it is high, easy to operate that needleless hair style Static Spinning has output, do not have the syringe needle blockage problem, spinneret surface easy to clean, the characteristics such as equipment is simple, and manufacturing cost is lower., as the needle-less electrostatic spinning technique of world, be the nanometer spider (Nanospider of Czech Elmarco company at present
TM) the needle-less electrostatic spinning technique, it adopts the transfer roller (referring to WO2005/024101 A1) of light face or the different surface morphologies such as surface band screw thread, decorative pattern as the electrostatic spinning head, it is thicker that its machining obtains nanofiber, and uneven fineness is larger: while carrying out the solution Static Spinning, average diameter is in 50～500nm scope; While carrying out the melt Static Spinning, diameter is more than 1 μ m, and plucked.In addition,, because transfer roller is metal solid, cause Surface charge distribution density lower, required actual spinning voltage is too high, and energy consumption is large, and the receiving range of its fiber is malleable not, is not easy to carry out the online adjustment of technological parameter.at present, Elmarco company has released second generation nanometer spider equipment, adopt a very thin long wire to carry out the needle-less Static Spinning as spinneret, spinning solution adopts reciprocal smearing method to apply, though can avoid the solvent of the open electrostatic spinning process of the first generation volatile, polymer is easy to be set in the problem on spinning roller surface, but seem single spinneret spinning output not as the first generation high, the spinning jet a little less than, wayward, and smear as fast reciprocating type the spinning solution bringing device that moves along wire and also can stop to a certain extent and hinder being uniformly distributed of spinning jet, and the fibre fineness variation is larger.
Summary of the invention
Technical problem:Technical problem to be solved in the utility model is, a kind of most advanced and sophisticated formula needle-less electrospinning device is provided, this spinning equipment can increase substantially output and the product uniformity of nanofiber product, and avoids problem in conventional needle hair style electrostatic spinning process, the problem includes: problems such as edge effect, syringe needle obstruction and inconvenience cleanings; Simultaneously, the nanofiber fineness of this spinning equipment preparation is thinner, and the fineness variation is lower, and fineness aberration rate (CV) is only 4.48～6.73%, and fiber is more evenly distributed in fibre web.
Technical scheme:For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of most advanced and sophisticated formula needle-less electrospinning device, this electrospinning device comprises spinning solution storage box, base cloth, device for spinning and negative high voltage dc source, chain, negative electrode and jockey that device for spinning comprises the needle plate of spinning manifold, upper surface implanted metal card clothing, is assemblied to form by chain link; Wherein, spinning manifold is fixedly connected on the top of spinning solution storage box, and chain is connected on the inwall of spinning manifold by jockey; Jockey is connected with transmission device, realizes the rotation of chain; The chain chain link of below is immersed in the spinning solution of spinning solution storage box, and needle plate is fixedly connected on chain; Base cloth covers the top of spinning manifold, and base cloth one end is positioned on the unwinding axle, and the base cloth other end is positioned on wireline reel; Spinning solution storage box, spinning manifold and base cloth form the spinning space of sealing; Negative electrode is affixed on the end face of base cloth; Device for spinning ground connection, negative electrode is connected with the negative high voltage dc source, forms high-voltage electrostatic field between negative electrode and metallic card clothing.
Further, described chain is two, and needle plate is covered with the surface of two chains, and an end of each needle plate is fixed on the outer plate of a chain.
Further, described jockey comprises four sprocket wheels, driving shaft and driven axles, and driving shaft all is connected on two relative sidewalls of spinning manifold by bearing with driven axle, and sprocket wheel is fixedly connected on respectively the two ends of driving shaft and the two ends of driven axle; Every chain is embedded on two relative sprocket wheels, and a sprocket wheel is positioned on driving shaft, and another sprocket wheel is positioned on driven axle; Driving shaft ground connection, driving shaft is connected with transmission device.
Further, described needle plate is connected contiguous block and is connected with brace with chain, the bottom of needle plate is provided with T shape guide rail, the L shaped brace that contiguous block comprises T shape support and is fixedly connected on T shape support below, brace of middle part riveted joint of the outer plate of each chain link of chain, brace is fixedly connected with the L shaped brace of contiguous block, and the T shape guide rail of the T shape support of contiguous block and needle plate is connected.
Further, described most advanced and sophisticated formula needle-less electrospinning device, also comprise flat bracket and lowering or hoisting gear, and flat bracket is fixedly connected on lowering or hoisting gear, and flat bracket relies on lowering or hoisting gear to realize moving up and down, and the spinning solution storage box is positioned on flat bracket.
Further, be positioned at the moving direction of chain link of the top in described chain opposite with the translation direction of base cloth.
Beneficial effect:Compared with prior art; most advanced and sophisticated formula needle-less electrospinning device of the present utility model is a kind of process units of the free fluid surface of polymer dope from the nanofiber (net) of group that utilize; can realize that the high polymer spinning solution prepares the scale of nanofiber (net), industrialization, serialization production, improve product yield and quality.This spinning equipment adopts the most advanced and sophisticated metallic card clothing of band as needleless hair style electrostatic spinning unit, can produce more powerful and more uniform field intensity at the crown position, is conducive to taking full advantage of and the inhomogeneity improvement of product of the energy.In this equipment, employing polylith needle plate is evenly distributed on the method on chain, can increase substantially product yield and output, and improves the uniformity of nano-fiber material.But the metallic card clothing self design that this spinning equipment adopts, also can directly buy or customize to traditional carding clothing manufacturer, and card clothing parameters and card clothing arranging density are adjustable, can be according to product needed flexible design and processing and manufacturing.The size of critical component such as sprocket wheel, chain, needle plate etc. can change as required, and needle plate length is consistent with the product fabric width, and particularly when other parameters of equipment fixedly the time, needle plate quantity still can design and change according to product thickness or grammes per square metre.More needle plate quantity can be produced more thick and heavy nano-fiber material, and significantly improves productive rate and output.In addition, the utility model also is provided with flat bracket and lowering or hoisting gear, can regulate in the vertical direction the position of spinning manifold and spinning solution storage box, the fiber receiving range is regulated, and device for spinning is closed mechanism, can effectively avoid the impact of spinning environment on the spinning jet, spinning process is stable.In addition, compare with metal wire type nanometer spider needle-less electrostatic spinning technique with existing roll-type, the prepared nanofiber fineness of electrospinning device of the present utility model is thinner, and fineness variation is lower, can be at a high speed, the thinner more uniform nanofiber of large-scale production, and its fineness aberration rate (CV) is only 4.48～6.73%, fiber is more evenly distributed in fibre web, have simple in structurely, be convenient to industrializing implementation, the advantage such as applied widely.
Description of drawings
Fig. 1 is the assembling schematic diagram of a needle plate in spinning equipment in the utility model.
Fig. 2 is covered with the structural representation of needle plate on chain in the utility model.
Fig. 3 is the SEM figure of the PVA nano-fiber film that makes of embodiment 1 of the present utility model.
Fig. 4 is the SEM figure of the PVA nano-fiber film that makes of embodiment 2 of the present utility model.
Fig. 5 is the SEM figure of the PVA nano-fiber film that makes of embodiment 3 of the present utility model.
have in figure: spinning solution 5, needle plate 10, spinning solution storage box 15, L shaped brace 20, screwed hole 30, brace 40, metallic card clothing 50, chain 60, sprocket wheel 70, outer plate 80, chain link 90, driven axle 100, T shape support 110, T shape guide rail 120, negative electrode 130, base cloth 140, unwinding axle 150, liquid overflow pipe 160, feed liquid pipe 170, wireline reel 180, the base cloth 190 that contains nanofiber, nano-fiber film 200, driving shaft 210, negative high voltage dc source 220, flat bracket 230, dynamic analysis of spinning 240, spinning manifold 250.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof, the technical solution of the utility model is described in further detail.
A kind of most advanced and sophisticated formula needle-less electrospinning device of the present utility model, comprise spinning solution storage box 15, base cloth 140, device for spinning and negative high voltage dc source 220.Chain 60, negative electrode 130 and jockey that device for spinning comprises the needle plate 10 of spinning manifold 250, upper surface implanted metal card clothing 50, is assemblied to form by chain link 90.Spinning manifold 250 is fixedly connected on the top of spinning solution storage box 15.Spinning manifold 250 and spinning solution storage box 15 communicate.Be equipped with device for spinning in spinning manifold 250.Chain 60 is connected on the inwall of spinning manifold 250 by jockey.Jockey is connected with transmission device, realizes the rotation of chain 60.The chain 60 chain link 90 of below is immersed in the spinning solution of spinning solution storage box 15.Needle plate 10 is fixedly connected on chain 60.Needle plate 10 can rotate along with chain 60.Base cloth 140 covers the top of spinning manifold 250, and base cloth 140 1 ends are positioned on the unwinding axle, and base cloth 140 other ends are positioned on wireline reel., by wireline reel and unwinding axle are set, realize coiling and the unwinding campaign of base cloth 140.Spinning solution storage box 15, spinning manifold 250 and base cloth 140 form the spinning space of sealing.Negative electrode 130 is affixed on the end face of base cloth 140.Device for spinning ground connection, negative electrode 130 is connected with negative high voltage dc source 220, forms high-voltage electrostatic field between negative electrode 130 and metallic card clothing 50.
Below provide a concrete structure embodiment.
As depicted in figs. 1 and 2, this tip formula needle-less electrospinning device, comprise the needle plate 10 of spinning solution storage box 15, spinning manifold 250, upper surface implanted metal card clothing 50, two chain 60, base cloth 140, negative electrode 130 and negative high voltage dc sources 220 that are assemblied to form by chain link 90.Metallic card clothing 50 is preferably card clothing.The voltage range 0 of this negative high voltage dc source 220～-100kV, current range 1～2mA.Spinning manifold 250 is fixedly connected on the top of storage box 15.Chain 60 is connected on the inwall of spinning manifold 250 by jockey.Jockey comprises four sprocket wheels 70, driving shaft 210 and driven axle 100.Driving shaft 210 all is connected on two relative sidewalls of spinning manifold 250 by bearing with driven axle 100.As preferably, driving shaft 210 and driven axle 100 measure-alike, driving shaft 210 and driven axle 100 are parallel to each other, and the axis of the axis of driving shaft 210 and driven axle 100 is on same level.Sprocket wheel 70 is fixedly connected on respectively the two ends of driving shaft 210 and the two ends of driven axle 100.Every chain 60 is embedded on two relative sprocket wheels 70, and a sprocket wheel 70 is positioned on driving shaft 210, and another sprocket wheel 70 is positioned on driven axle 100.Driving shaft 210 is connected with transmission device, realizes the rotation of chain 60.Needle plate 10 is covered with the surface of two chains 60, and an end of each needle plate 10 is fixed on the outer plate 80 of a chain 60.The fabric width of the product that the length of each needle plate equals finally to make (base cloth 190 that namely contains nanofiber).The chain 60 chain link 90 of below is immersed in the spinning solution of spinning solution storage box 15.Needle plate 10 is fixedly connected on chain 60.Base cloth 140 covers the top of spinning manifold 250, and base cloth 140 1 ends are positioned on unwinding axle 150, and base cloth 140 other ends are positioned on wireline reel 180.Wireline reel 180 is connected with transmission device.Transmission device can drive wireline reel 180 rotations.For example, wireline reel 180 carries out constant speed by routine techniques by driven by motor and rotates, and speed is adjustable within the specific limits.The rotation of wireline reel 180, by the tension force of base cloth 140, the base cloth 140 that drives on unwinding axle 150 carries out continuous unwinding, the place that for electro spinning nano fiber provides, can deposit, receive.Spinning solution storage box 15, spinning manifold 250 and base cloth 140 form the spinning space of sealing.Negative electrode 130 is affixed on the end face of base cloth 140.Driving shaft 210 ground connection, negative electrode 130 is connected with negative high voltage dc source 220, forms high-voltage electrostatic field between negative electrode 130 and metallic card clothing 50.
In the above-described embodiments, the connected mode of needle plate 10 and chain 60 has multiple.This patent is this frame mode preferably: needle plate 10 is connected with chain and is connected connection by contiguous block with brace.The bottom of needle plate 10 is provided with T shape guide rail 120.Contiguous block comprises T shape support 110 and the L shaped brace 20 that is fixedly connected on T shape support 110 belows.Brace 40 of middle part riveted joint of the outer plate 80 of each chain link 90 of chain 60.Utilize bolt by screwed hole 30, brace 40 to be fixedly connected with L shaped brace 20, the T shape support 110 of contiguous block and the T shape guide rail 120 of needle plate 10 are connected.In the art,, through the non-creativeness work, can realize the fixed connection structure of needle plate 10 and chain 60, all in the protection domain of this patent.
Further, this tip formula needle-less electrospinning device also comprises flat bracket 230 and lowering or hoisting gear.Flat bracket 230 is fixedly connected on lowering or hoisting gear, and flat bracket 230 relies on lowering or hoisting gear to realize moving up and down, and spinning solution storage box 15 is positioned on flat bracket 230.The distance that flat bracket 230 moves is for moving up or down approximately 10～30cm.Lowering or hoisting gear is prior art, as long as can realize the lifting of flat bracket 230.Drive flat bracket 230 by lowering or hoisting gear, can drive spinning solution storage box 15 and carry out vertical displacement movement, fiber receiving range (spinning distance) is rationally regulated.After adjusting receiving range, change the spinning manifold 250 of corresponding height,, to guarantee the close contact of spinning manifold 250 tops and base cloth 140, guarantee the seal of spinning environment.Spinning manifold 250 height can have several specifications, and for example 70,75,80,85 and 90cm, so that receiving range can approximately mediated in 10～30cm.
Further, the moving direction of chain link 90 that is positioned at the top in described chain 60 is opposite with the translation direction of base cloth 140, to avoid bringing interference to the spinning jet.
Further, the total length of described every chain 60 equals the integral multiple of needle plate 10 width and adjacent needle plate 10 gap width sums.Can guarantee that like this needle plate 10 is evenly arranged on chain 60.
In this spinning equipment, each brace 40 is potential sites of needle plate 10.Needing to place how many piece needle plates 10 is decided by nano-fiber film product thickness or grammes per square metre.10 numbers of needle plate are more, and product thickness or grammes per square metre are just larger.Needle plate 10 no matter the piece number what, all need to be uniformly distributed along the outer surface of chain 60, be uniformly distributed on base cloth 140 to keep chain 60 and needle plate 10 running balances and fiber.Needle plate 10 quantity are more, and the length of whole chain 60 is just longer, and the total length of every chain 60 should be the integral multiple of needle plate width and needle plate gap sum.
In this spinning equipment, metallic card clothing 50 is prior art at the implantation of needle plate 10 upper surfaces, can directly buy or customize the needle plate of having planted card clothing to card clothing supplier as required.The metallic card clothing type can be any specification type of the prior art, but isosceles triangle profile of tooth preferably, and profile of tooth is of moderate size, and is moderate to density in length and breadth.Metallic card clothing 50 materials can be any corrosion-resistant metal materials of conduction again, and as stainless steel, iron, aluminium, copper etc., preferably brass, be secondly stainless steel.Miscellaneous part material in needle plate 10 and spinning system can be metal or plastics, but higher plastics of dielectric properties preferably.
The utility model is not addressed part and is applicable to prior art.For example, be this area routine techniques to carrying spinning solution in spinning solution storage box 15.Arrange and feed liquid pipe 170 and liquid overflow pipe 160 on spinning solution storage box 15, at spinning solution storage box 15 outer setting spinning pumps and preparation of spinning solution device.The preparation of spinning solution device is connected with hello liquid pipe 170 by spinning pump.Regulate the rotating speed of spinning pump, the spinning solution 5 for preparing is entered in spinning solution storage box 15 by feeding liquid pipe 170, its liquid level is just mutually concordant with the lower surface of liquid overflow pipe 160, unnecessary spinning solution 5 is back in the preparation of spinning solution device via liquid overflow pipe 160, makes the crown of the card clothing 50 on the chain 60 of below all immerse in spinning solution.Transmission device also adopts existing transmission mechanism, for example belt and motor, perhaps gear drive etc.Driving shaft 210 is connected with motor by belt, and wireline reel 180 also is connected with motor by belt.The lowering or hoisting gear that drive flat bracket 230 moves is realized by routine techniques, as spindle arrangement.The power resources of lowering or hoisting gear can be passed through manual rotation, or the drive of low speed stepper motor, or other existing techniques in realizing.
The course of work of the most advanced and sophisticated formula needle-less electrospinning device of said structure is:
(1) spinning solution is carried: the rotating speed of regulating spinning pump, the spinning solution 5 for preparing is entered in spinning solution storage box 15 by feeding liquid pipe 170, its liquid level is just mutually concordant with the lower surface of liquid overflow pipe 160, and unnecessary spinning solution 5 is back in the preparation of spinning solution device via liquid overflow pipe 160.
(2) regulate the position height of flat bracket 230, obtain the fiber receiving range that needs, be generally 15～25cm.That is to say, at the needle plate 10 on chain 60 tops and the distance between base cloth 140, remain 15～25cm.
(3) open the drive motors of driving shaft 210, driving shaft 210 is started from low speed to accelerating gradually at a high speed, until the speed that spinning needs.The driving shaft 210 that rotates by sprocket wheel 70 and chain 60 with power transmission to driven axle 100, drive is connected in L shaped brace 20 and the T shape support 110 on chain 60, and then drives the needle plate 10 be nested on T shape support 110 and the card clothing 50 of implanting the needle plate surface carried out shuttling movement against the production line direction.When card clothing 50 is in foot, owing to immersing the inner last layer spinning solution of being with of spinning solution 5.
(4) open negative high voltage dc source 220, and increase gradually voltage and field intensity.When the card clothing 50 that is loaded with spinning solution 5 moves to topmost, enter by the card clothing 50 of ground connection and the high-voltage electrostatic field between negative electrode 130, spinning solution 5 is under the effect of high voltage electric field, at first electrostatic field force contends with surface tension and the viscosity resistance of spinning solution 5 itself, form taylor cone on the crown of card clothing 50, and then under the electrostatic field force effect that increases, the drafted one-tenth dynamic analysis of spinning 240 of taylor cone; In the process that dynamic analysis of spinning 240 moves to negative electrode 130 directions, because dynamic analysis of spinning 240 is mutually exclusive with like charges, the further splitting of jet becomes more tiny drop, solvent volatilizees rapidly/evaporates, while arriving base cloth 140 surface, the droplet of spinning solution 5 is solidified into nanofiber and is deposited on the lower surface of base cloth 140.Due to interfibrous adhesive attraction, and form nano-fiber film/non-weaving cloth 200.The lower surface of base cloth 140 has deposited nano-fiber film 200, forms the base cloth 190 that contains nanofiber.Along with the continuous rotation of wireline reel 180, the base cloth 190 that contains nanofiber constantly is wound up on wireline reel 180.Wherein, from the base cloth 140 of unwinding axle 150 can be other class non-weaving cloth such as spunbond, melt and spray, the non-weaving cloth such as acupuncture, water thorn, can be also the low profile flexible materials such as paper or microporous membrane.
(5) when reaching the nano-fiber film quantity that needs, close solution feed pump power switch, stop supplies spinning solution 5; The voltage knob of negative high voltage dc source 220 is transferred to then powered-down switch of minimum fast; Close the motor switch of wireline reel 180 power switches and driving shaft 210, the electrostatic spinning process finishes.
Most advanced and sophisticated formula needle-less electrospinning device of the present utility model is vertical, closed, upward spinning equipment.Whole spinning process is completed in spinning manifold 250, can effectively reduce the impact of spinning environment (such as temperature, humidity, wind speed etc.) on spinning process.Card clothing 50 on needle plate 10 immerses in the spinning solution of below, continuously brings spinning solution into be positioned at top electrostatic field by the shuttling movement of needle plate 10 and carries out spinning.The base cloth 140 that nanofiber is positioned at the top receives and forms net.Base cloth 140 is by carrying out unwinding on unwinding axle 150, and during the lower surface of process negative electrode 130, base cloth 140 lower surfaces are deposited one deck nano-fiber film 200 and become the base cloth 190 that contains nanofiber, are wound afterwards axle 180 and reel.In Fig. 1, wireline reel 180 rotates in the counterclockwise direction, so the production line direction is direction from right to left, namely shown in the horizontal direction of arrow in Fig. 1.The direction that needle plate 10 enters the spinning solution 5 in spinning solution storage box 15 is from right to left.It is the surface charge density of metallic card clothing that spinning equipment of the present utility model can greatly improve single spinning unit, thereby improve utilization rate of electrical, reduced production cost and expense, the fineness of gained nanofiber product is thinner, and more even, and by spininess plate 10, along evenly arranging of chain 60 outer surfaces, product yield and quality have been increased substantially.
Below provide concrete application implementation of the present utility model.These embodiment only are used for further illustrating the utility model, do not form the restriction to the utility model application claim.
Following examples all adopt above-mentioned structure embodiment, and spinning solution is polyvinyl alcohol (PVA) solution of 20% w/v, its degree of polymerization 1700, and alcoholysis degree is 99 mol%, molecular weight 74800; Spinning solution is by with the PVA powder, adds in deionized water, and dissolving prepared and obtained in 2 hours under 80 ℃.Negative electrode 130 is dull and stereotyped, and length 30cm(is consistent with fabric width), width is 10cm.Base cloth 140 is melt-blowing nonwoven, grammes per square metre 12g/m
2
Embodiment 1
The specification that employing is produced by Guangshan County, Henan Province white shark card clothing factory is that the metallic card clothing of 5606 * 56109 types is as the electrostatic spinning unit.
Outer surface along each chain is evenly distributed with 34 pairs of braces and 34 needle plates altogether, needle plate length (being the product fabric width) 30cm, and needle plate width 3.4cm, the nearest horizontal clearance of adjacent two needle plates is 0.2cm.
L shaped brace width is 0.2cm, and between adjacent two L shaped braces, distance is 0.6cm.
The sprocket wheel external diameter is 11.6 cm, and centre of sprocket is apart from being 25 cm, and chain length is 65 cm, chain wheel speed 10 rev/min.
The speed that base cloth carries out unwinding and coiling is 10m/min.Negative electrode voltage is-50kV that receiving range (being the distance between base cloth and superposed metallic card clothing) is 15cm.
The PVA nano-fiber film product grammes per square metre that this equipment finally makes is 2g/m
2, average fibre diameter is 196nm, coefficient of variation CV is 6.73 %.Utilize scanning electronic microscope clap this PVA nano-fiber film scanning electron microscope (SEM) photograph (SEM) as shown in Figure 3.
Embodiment 2
The specification that employing is produced by Guangshan County, Henan Province white shark card clothing factory is that 5715 * 4210 metallic card clothing is as the electrostatic spinning unit.
Outer surface along each chain is evenly distributed with 34 pairs of braces and 34 needle plates altogether, and needle plate length (being the product fabric width) is 30cm, needle plate width 3.4cm, and the nearest horizontal clearance of adjacent two needle plates is 0.2cm.
L shaped brace width is 0.2cm, and between adjacent two L shaped braces, distance is 0.6cm.
The sprocket wheel external diameter is 11.6 cm, and centre of sprocket is apart from being 25 cm, and chain length is 65 cm, chain wheel speed 10 rev/min.
The speed that base cloth carries out unwinding and coiling is 10m/min.Negative electrode voltage is-48kV, receiving range 15cm.
The PVA nano-fiber film product grammes per square metre that this equipment finally makes is 2g/m
2, average fibre diameter is 190nm, coefficient of variation CV is 4.48 %.Utilize scanning electronic microscope clap this PVA nano-fiber film scanning electron microscope (SEM) photograph (SEM) as shown in Figure 4.
Embodiment 3
The specification that employing is produced by Guangshan County, Henan Province white shark card clothing factory is that 8808 * 7220 metallic card clothing is as the electrostatic spinning unit.
Outer surface along each chain is evenly distributed with 34 pairs of braces and 17 needle plates altogether, and needle plate length (being the product fabric width) is 30cm, needle plate width 3.4cm.
L shaped brace width is 0.2cm, and between two adjacent L shaped braces, distance is 0.6cm.
The sprocket wheel external diameter is 11.6 cm, and centre of sprocket is apart from being 25 cm, and chain length is 65 cm, chain wheel speed 10 rev/min.
The speed that base cloth carries out unwinding and coiling is 10m/min.Negative electrode voltage is-30kV that receiving range is 15cm.
The PVA nano-fiber film product grammes per square metre that this equipment finally makes is 1g/m
2, average fibre diameter is 135nm, coefficient of variation CV is 6.60 %.Utilize scanning electronic microscope clap this PVA nano-fiber film scanning electron microscope (SEM) photograph (SEM) as shown in Figure 5.
By above three embodiment, prove and adopt spinning equipment of the present utility model can produce the nano-fiber film product, and this nano-fiber film product fineness is thinner, fineness aberration rate (CV) is only 4.48～6.73%, the fineness variation is lower.From Fig. 3 to Fig. 5, can observe out fiber and be uniformly distributed in fibre web.
Only below the example of implementing technical solutions of the utility model, not as the restriction to the utility model protection domain.Those skilled in the art under the enlightenment of above-described embodiment, do not need to pay any creative work,, to the improvement that technical solutions of the utility model are carried out, all belong to the protection domain of this patent.
Claims (9)
1. most advanced and sophisticated formula needle-less electrospinning device, it is characterized in that, this electrospinning device comprises spinning solution storage box (15), base cloth (140), device for spinning and negative high voltage dc source (220), chain (60), negative electrode (130) and jockey that device for spinning comprises the needle plate (10) of spinning manifold (250), upper surface implanted metal card clothing (50), is assemblied to form by chain link (90); Wherein, spinning manifold (250) is fixedly connected on the top of spinning solution storage box (15), and chain (60) is connected on the inwall of spinning manifold (250) by jockey; Jockey is connected with transmission device, realizes the rotation of chain (60); Chain (60) the chain link (90) of below is immersed in the spinning solution of spinning solution storage box (15), and needle plate (10) is fixedly connected on chain (60); Base cloth (140) covers the top of spinning manifold (250), and base cloth (140) one ends are positioned on the unwinding axle, and base cloth (140) other end is positioned on wireline reel; Spinning solution storage box (15), spinning manifold (250) and base cloth (140) form the spinning space of sealing; Negative electrode (130) is affixed on the end face of base cloth (140); Device for spinning ground connection, negative electrode (130) is connected with negative high voltage dc source (220), forms high-voltage electrostatic field between negative electrode (130) and metallic card clothing (50).
2. according to most advanced and sophisticated formula needle-less electrospinning device claimed in claim 1, it is characterized in that, described chain (60) is two, and needle plate (10) is covered with the surface of two chains (60), and an end of each needle plate (10) is fixed on the outer plate (80) of a chain (60).
3., according to most advanced and sophisticated formula needle-less electrospinning device claimed in claim 2, it is characterized in that described jockey
Comprise four sprocket wheels (70), driving shaft (210) and driven axle (100), driving shaft (210) all is connected on two relative sidewalls of spinning manifold by bearing with driven axle (100), and sprocket wheel (70) is fixedly connected on respectively the two ends of driving shaft (210) and the two ends of driven axle (100); Every chain (60) is embedded on relative two sprocket wheels (70), and a sprocket wheel (70) is positioned on driving shaft (210), and another sprocket wheel (70) is positioned on driven axle (100); Driving shaft (210) ground connection, driving shaft (210) is connected with transmission device.
4. according to most advanced and sophisticated formula needle-less electrospinning device claimed in claim 3, it is characterized in that, described needle plate (10) is connected 60 with chain) be connected 40 by contiguous block with brace) connect, the bottom of needle plate (10) is provided with T shape guide rail (120), the L shaped brace (20) that contiguous block comprises T shape support (110) and is fixedly connected on T shape support (110) below, a middle part riveted joint brace (40) of the outer plate (80) of each chain link (90) of chain (60), brace (40) is fixedly connected with the L shaped brace (20) of contiguous block, the T shape support (110) of contiguous block and the T shape guide rail (120) of needle plate (10) are connected.
5. according to any one described most advanced and sophisticated formula needle-less electrospinning device in claim 1 to 4, it is characterized in that, also comprise flat bracket (230) and lowering or hoisting gear, flat bracket (230) is fixedly connected on lowering or hoisting gear, flat bracket (230) relies on lowering or hoisting gear to realize moving up and down, and spinning solution storage box (15) is positioned on flat bracket (230).
6., according to most advanced and sophisticated formula needle-less electrospinning device claimed in claim 5, it is characterized in that, the distance that described flat bracket (230) moves is for moving up or down 5～30cm.
7., according to most advanced and sophisticated formula needle-less electrospinning device claimed in claim 1, it is characterized in that, the moving direction of chain link (90) that is positioned at the top in described chain (60) is opposite with the translation direction of base cloth (140).
8., according to most advanced and sophisticated formula needle-less electrospinning device claimed in claim 1, it is characterized in that, the total length of described every chain (60) equals the integral multiple of needle plate (10) width and adjacent needle plate (10) gap width sum.
9., according to most advanced and sophisticated formula needle-less electrospinning device claimed in claim 1, it is characterized in that, described metallic card clothing (50) is card clothing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202738779U CN203284512U (en) | 2013-05-20 | 2013-05-20 | Tip type needle-free electrostatic spinning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202738779U CN203284512U (en) | 2013-05-20 | 2013-05-20 | Tip type needle-free electrostatic spinning device |
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| Publication Number | Publication Date |
|---|---|
| CN203284512U true CN203284512U (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202738779U Expired - Fee Related CN203284512U (en) | 2013-05-20 | 2013-05-20 | Tip type needle-free electrostatic spinning device |
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| Country | Link |
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| CN (1) | CN203284512U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255485A (en) * | 2013-05-20 | 2013-08-21 | 江苏菲特滤料有限公司 | Tip-end type needle-free electrostatic spinning equipment |
| CN105937059A (en) * | 2016-06-27 | 2016-09-14 | 佛山轻子精密测控技术有限公司 | Netted rotating electrode |
| CN108004628A (en) * | 2018-01-05 | 2018-05-08 | 东华大学 | It is a kind of to be used to prepare the device and method of nanofiber/staple blended yarn with the nanofiber mechanism that prevents adhesion |
| CN108642577A (en) * | 2018-05-29 | 2018-10-12 | 巢湖学院 | A kind of liquid level induction electrostatic spinning apparatus |
-
2013
- 2013-05-20 CN CN2013202738779U patent/CN203284512U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255485A (en) * | 2013-05-20 | 2013-08-21 | 江苏菲特滤料有限公司 | Tip-end type needle-free electrostatic spinning equipment |
| CN103255485B (en) * | 2013-05-20 | 2015-08-05 | 江苏菲特滤料有限公司 | A kind of most advanced and sophisticated formula needle-less electrospinning device |
| CN105937059A (en) * | 2016-06-27 | 2016-09-14 | 佛山轻子精密测控技术有限公司 | Netted rotating electrode |
| CN108004628A (en) * | 2018-01-05 | 2018-05-08 | 东华大学 | It is a kind of to be used to prepare the device and method of nanofiber/staple blended yarn with the nanofiber mechanism that prevents adhesion |
| CN108642577A (en) * | 2018-05-29 | 2018-10-12 | 巢湖学院 | A kind of liquid level induction electrostatic spinning apparatus |
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